Born in London, England, Salt grew up in Auckland, New Zealand, where he had a distinguished career at Westlake Boys High School.

In 2013, Salt debuted in the New Zealand NBL for the Super City Rangers, averaging 8.6 points and 5.4 rebounds in 14 games.

The Cavaliers won a share of the Atlantic Coast Conference regular season title and were again a number one seed.

Matching up against the Boilermakers' big and physical front line, Salt played 34 minutes and scored 5 points, grabbed eight rebounds and collected a pair of steals to help the Cavaliers to an overtime win and a spot in the Final Four.

[11] On 26 July 2019, he signed with Trefl Sopot of the Polish Basketball League (PLK), after considering his home country New Zealand Breakers.

Salt withdrew from consideration for New Zealand's 2019 FIBA World Cup team, instead focusing on preparing for the 2019–20 season.